/Engine/Source/Developer/LauncherServices/Public/ILauncher.h
typedef TMulticastDelegate_TwoParams< void, [ILauncherWorkerPtr](API\Developer\LauncherServices\ILauncherWorkerPtr), [ILauncherProfileRef](API\Developer\LauncherServices\ILauncherProfileRef) > FOnLauncherWorkerStarted